Research On Grid Resource Scechdule Based On Trust Mechnism

Grid System consists of various resources,and the resources have more features of dynamic change,autonomy,geiographical dipersion and hetergeneous systems,which make scheduling of resources very complex and challenging.At present,most of scheduling in grid only concern some scheduling performance parameters,and largely ingore the impact of trust mechnism.Firstly,grid's basic conception,technology characteristic and grid's sorts are reviewed.The architecture of grid system is introduced.The aim of schedule- ng and scheduling algorithms are analysed and their advantage and disadvantage are pointed.Secondly,concerning the grid's characteristic,a new trust mechnism,which compise behavior trust model and capability trust, is proposed.The behavior trust model with two layers is united by domain,this architecture not only needn't change the form of resource management,but also can share the resources.Based on behavior trust and concerned grid's dynamic change,capa- bility trust which make up the behavior trust,is proposed.Thirdly,A new trust driven resource scheduling algorithm TDS is proposed by ananlysing Min-min algorithm.TDS not only focus on performance QoS but also pay attention to trust QoS,besides reduce the vicious users and resources,accordingly reduce the failing times and inhance the scheduling efficiency.Finally,the performance of TDS,Min-min and TD Min-min are compared with GridSim.